Does anyone else write the sourcing agreement before they even know who the end buyer is

The misconception worth naming: a sourcing agreement written before you have a buyer does not lock you into buyer-specific terms, because the agreement is with your client, the principal, and the buyer is not a party to it at all.

What you actually want to nail down upfront is the fee trigger definition, specifically whether "qualified presentation" means a written offer, a signed LOI, or funds-verified proof of interest, because that single phrase is where your $4,200 disappeared. The buyer walking is a separate question from whether you performed, and a well-drafted agreement treats those as independent clauses.

What's the structure your client prefers on fee timing, earned-at-presentation or earned-at-close, because that choice changes which risk you're each carrying and there's no universal answer?

The $4,200 lesson you described is exactly why the sequencing question matters, and drafting first is the right instinct.

The way most people on the service side handle this is a two-layer document setup. The first layer is a master sourcing agreement, sometimes called a service agreement or acquisition services agreement, that covers the durable terms: what you are being hired to do, how your fee is calculated, what triggers the fee, and critically, what happens to your fee if the end buyer walks after you have made a qualified presentation. That last clause is the one that would have saved your $4,200. You define "qualified presentation" in writing before the first call, not after the deal goes sideways.

The second layer is a short deal-specific addendum for each property. It fills in the numbers: the target property, the fee amount or percentage for that engagement, any timeline the client cares about. The master agreement does not change. The addendum handles what is different about this deal.

That structure solves your Maryvale concern. You are not locked into specific numbers you negotiated in the abstract, because the specific numbers live in the addendum. You are locked into the rules of the relationship, which is what you actually want to be firm about.

One thing you did not ask but which matters a lot here: whether your state requires a real estate license to receive a fee for sourcing and contracting property for someone else's account. That answer changes how your agreement has to be written. A real estate attorney in Arizona is the right person to review it before you rely on it.

Are you currently working from a verbal agreement with your East Valley client on deal five, or have you already started drafting?

What did the agreement actually say about fee survival if the buyer walked?

The framing of "before buyer versus after buyer" is slightly off, and I think that's what's making the question hard. The agreement does not need to anticipate who the buyer is. It needs to define what triggers your fee and what terminates your obligation, and those are questions about the deal and the client, not about the buyer. "Qualified presentation" is the phrase that killed deal four, and the fix is simple: the agreement defines a qualified presentation as a written offer at or above a specified floor, submitted within a specified window, with proof of funds attached. Now the buyer's decision to walk is irrelevant because the trigger was the presentation, not the closing.

The part worth thinking through on your Maryvale situation is whether your fee should survive a buyer default separately from surviving a seller default or a client decision to pull the deal. Those are three different failure modes and most service-side agreements treat them identically, which is how you end up with "different memories." A framework agreement that sets the fee structure and survival language, with a short deal-specific addendum that fills in the floor price and the window, gives you both the consistency you want and the flexibility you said you needed when the real numbers arrive. What I want to know is whether your repeat client relationship is exclusive or non-exclusive on a given property, because that one term changes how aggressive your fee survival language needs to be by a significant margin.

The part that stood out to me was "what made sense in the abstract gets weird fast when the actual numbers are on the table." That is exactly where I see people losing money, and I think it points to a drafting problem more than a timing problem. The issue is not when you write it, it is that "qualified presentation" and "fee survival" are doing too much work as phrases when they should be explicit triggers. If your agreement had said the fee vests on executed purchase agreement, not on closing, and defined presentation as written LOI delivered to seller, you would have had something to stand on at deal four regardless of when you wrote it.

What I would ask is whether your renegotiation instinct is actually about timing or about not wanting to be locked to a flat fee when a deal turns out to be bigger or messier than you expected. Because those are two different problems. The East Valley stuff I have been watching from the lien side is trading way wide of what Maricopa comps suggest on the surface, which means sourcing fees scoped to a fast close can get eaten alive if the deal stretches six weeks and the buyer reprices. A framework agreement with a base fee plus a defined percentage kicker above a certain net spread handles that without requiring you to renegotiate per deal. You write it once, it scales, and you are not having the awkward conversation mid-negotiation when your leverage is lowest.

The fee survival clause is the whole ballgame, and you can write it before you know anything about the buyer because it describes events, not people. Something like "fee is earned upon first qualified presentation to a buyer introduced by sourcer, survives buyer substitution, and is not contingent on close" is buyer-agnostic by design.

The framework-then-addendum structure is worth considering here: a master sourcing agreement that covers fee trigger, survival, dispute resolution, and your definition of "qualified," then a one-page deal-specific exhibit that names the property, the target spread or flat fee, and any buyer-side conditions particular to that acquisition. The master never changes, the exhibit gets negotiated per deal, and you have something signed before the first call either way.

What does your client say when you bring up signing a master agreement before sourcing starts, and is the resistance on their end or yours?

The assumption doing the most work in your question is that "before you have a buyer" and "locked into bad terms" are connected, and they are not. A pre-engagement sourcing agreement with your client does not need to anticipate the buyer at all, it only needs to define what triggers your fee, what constitutes a qualified presentation, and whether your fee survives a buyer walk versus a client walk. Those are client-side terms, not buyer-side terms, and you can nail them down before you even pull comps. What killed deal four was not the absence of a buyer relationship in the agreement, it was the absence of a definition that both of you had signed off on before either of you had skin in the game. The renegotiation-per-engagement model works fine as a framework, but the fee survival clause and the definition of "qualified" need to be in the master agreement, not in a conversation you have when everyone is already tired and close to money.

What does your current draft say about who owns the fee if your client rejects a buyer you sourced on terms your client set?

Draft a master services agreement once, then attach a one-page deal-specific addendum per engagement. The master covers the definitions that bite you, including what "qualified presentation" means, whether your fee survives a buyer default versus a seller default, and the exact trigger for when the fee is earned. The addendum covers the numbers, the property, and any carve-outs the client wants for that specific deal. When the addendum and the master conflict, the master controls unless the addendum says explicitly otherwise, and that sentence needs to be in both documents. The clause structure you want looks something like this: fee is earned upon written acceptance of terms by a buyer introduced by sourcing party, and survives termination of this agreement for any introductions made prior to termination.

The related mechanic worth pulling in here is how option-based wholesalers handle the same timing problem. They solve fee survival by tying their interest to the contract itself rather than to a relationship, so the instrument travels with the deal regardless of what either party remembers. On the service side you cannot do that cleanly, but you can get close by defining your introduction in writing the moment you send a buyer name to your client, not after the buyer commits. A timestamped email confirmation of the introduction date is the paper version of that protection, and it costs nothing to send.

What did the original arrangement say, if anything, about who counts as your introduction versus a buyer your client already knew?

What does your client's standard assignment language say about fee triggers?

Two structures exist here and they solve different problems. A single agreement written before you know the buyer forces you to define "qualified presentation" in the abstract, which is actually where you want to define it, because once a specific buyer is in the room both parties unconsciously anchor to that buyer's behavior rather than the standard the work deserves. The risk is that abstract language on fee triggers and survival clauses gets tested by concrete facts, so the agreement has to be specific enough to hold without being so buyer-specific that it needs rewriting every time. The version that wins for repeat client work is a master agreement that sets the fee structure, the survival period, and exactly what disqualifies a presentation, then a short engagement letter per property that names the asset, the target price range, and any buyer-category restrictions the client wants. That structure would have saved your $4,200 because "qualified presentation" would have been defined in the master before deal four ever started, and the engagement letter for that property would have confirmed whether buyer-walk risk sat with you or with the client.

What definition of "qualified presentation" are you working with now in your new drafts, and does it tie fee survival to your act of presenting or to the buyer's decision to proceed?

Your instinct to draft first is right, and the Maryvale concern is answerable with structure rather than timing. A master terms document covers fee survival, what counts as a qualified presentation, and what happens if the buyer walks post-acceptance, and you sign that once with your client at the start of the relationship. Each individual property gets a one-page engagement addendum that specifies the address, the fee amount or formula, and any deal-specific carve-outs. The master terms never change mid-deal because you negotiated them when nobody had skin in a specific outcome yet, which is the only moment either party reasons clearly about edge cases. The addendum is where Maryvale-type flexibility lives, because that is the document that reflects what you actually know about the property and the likely buyer pool before you go to work on it.

The number I would want from you before I said anything more definitive is what your fee structure looks like on the addendum, specifically whether it is a flat amount or a percentage of assignment spread. That choice changes almost every other clause. A flat fee means your survival language has to be very precise about what triggers payment, because the buyer walking before closing is ambiguous if the contract was accepted and the earnest money was non-refundable. A percentage of spread means you have a different problem, which is that your client has an incentive to compress the stated spread if the relationship sours, and your agreement needs audit rights or a floor to protect against that. Which are you using right now?

Maryvale specifically is doing a lot of heavy lifting in your question because that market moves weird, buyers who look qualified on paper show up with hard money contingencies nobody disclosed, and suddenly your "qualified presentation" definition is doing work it was never designed to do.

What I've seen people do that actually holds up is separate the fee trigger from the buyer relationship entirely. Not "fee survives if buyer closes" but "fee is earned at accepted LOI or executed PSA, full stop, regardless of what happens after." That reframes the whole thing because you're no longer arguing about whether the buyer walked or your client let the deal die, the clock stops at a defined moment you both witnessed. The $4,200 you lost probably wasn't lost at assignment, it was lost six weeks earlier when nobody wrote down what "presentation accepted" meant. So drafting early isn't backwards, it's just forcing a conversation your client would rather defer until they know whether they like the deal.

Maryvale specifically is where I would want the tightest paper because the buyer pool there is weird and the numbers shift fast depending on who you're talking to. That's the exact spot where "qualified presentation" becomes a four-thousand-dollar argument.

What worked for me, and I'm not on the service side but I've been on the receiving end of sourcing arrangements twice, is that the framework agreement can be loose on the fee amount and still be airtight on the survival question. Those are two different clauses and people keep treating them like one. The deals where I was the client, the sourcer locked in "fee survives buyer substitution, does not survive seller pulling the property" before we talked price, and we renegotiated the number once I saw the deal. That order made sense. I never felt cornered on the fee structure but I also couldn't pretend I didn't owe anything when a replacement buyer closed. What kills the relationship isn't the renegotiation, it's the silence where the clause should have been. Your deal four had a silence problem, not a timing problem.

Lost $4,200 with no paper is the exact sequence that finally got me to stop treating agreements as something you write after trust is established. I have a Kansas City PM I've worked with for two years and I still don't have everything signed the way it should be, so I'm not throwing stones, but the lesson lands the same either way.

What I'd push back on is the fear that early drafting locks you in. The agreement doesn't have to define the fee amount, it just has to define what triggers it and what kills it. Those two things are knowable before you ever see a buyer.

Scope creep in the definition of "qualified presentation" is where these agreements die, and if your framework does not define it with a numbered threshold, your client will define it for you at the worst moment.

Writing the agreement before you know the buyer is correct sequencing.

The document that failed you was not absent, it was incomplete on the one clause that governs every service-side wholesale deal: whether your fee attaches to the introduction or to the close. Take a flat $5,000 sourcing fee on a $180,000 acquisition. If the agreement says fee is earned on "qualified presentation to a ready, willing and able buyer," then a buyer who walks after due diligence still triggers payment, because the presentation happened. If it says fee is earned on "successful closing," the client owes nothing and has no incentive to tell you the real reason the deal died. Your $4,200 evaporated because that sentence was missing, not because the agreement came early.

The flexibility concern is real but it belongs in a different part of the document. A master terms sheet covering fee survival, definition of qualified introduction, dispute mechanism and exclusivity window can hold firm across every engagement. The deal-specific exhibit attached to it is where the purchase price range, the target return the client told you, and any buyer-pool restrictions live, and those you absolutely renegotiate per property. That structure lets you draft the protective language once and adjust the commercial terms without reopening the clause that saved you.

The question I would want answered before I drafted the next one: does your client define "qualified buyer" the same way you do, and has either of you written that definition down yet?

What "qualified presentation" means is a definition problem, not a timing problem.

Fee survival is the one clause that almost nobody defines until they're staring at a dead deal. "Qualified presentation" should have a number attached to it, proof of funds over X, signed NDA, whatever you decide, but something measurable that isn't just vibes.

The renegotiation question is real though. What's your actual exposure if a buyer comes in at a number that makes your flat fee look insane relative to the spread?

Your fee did not die because you lacked paper; it died because nobody defined what triggered it.

A sourcing agreement written before you have a buyer is actually the correct order, because what you are defining is the engagement terms with your client, not the transaction terms with the buyer. Those are two separate contracts and conflating them is what got you to "different memories." The master agreement covers fee triggers, survival language, and what constitutes a qualified presentation. A short deal-specific addendum, one page, covers the property address, the target buyer profile, and the fee amount or percentage for that engagement. The addendum takes five minutes to update; the master never changes. You are not locked into terms that won't fit the room because the room-specific terms live in the addendum. The Maryvale weirdness goes in the addendum, not back into the master.

The number doing the most work in your situation is not the fee amount, it is the survival clause. A fee that survives the buyer walking requires explicit language saying the fee is earned upon qualified presentation, not upon closing. If the master had said that, deal four pays you regardless of what the buyer did afterward.

What was your client's stated reason when the buyer walked, and did they argue you had not made a qualified presentation, or did they argue the fee simply did not apply without a close?